Mechanical seals or heavy duty seals are specially designed for rotating applications in extreme environments that resist severe wear and prevent the entry of harsh, abrasive envelopes. Mechanical Face Seal is available in Heavy Duty Seal, Face Seal, Lifetime Seal, Floating Seal, Duo Cone Seal, Toric Seal, Mechanische Laufwerkdichtungen (Bulgarian), Mekaniske (Bulgarian), Механични Челни Уплътнения (Danish), Mekaaninen otsatiiviste Joints d 'Etanchéité Axiaux (in French), Mechaniczne Uszczelnienie Czołowe (in Polish), Juntas espejo (in Spanish), Mekaniska Glidringstätningar (in Swedish).

There are two types of Mechanical Face Seals / Heavy Duty Seals.

The DO type is the most common form of using o-rings as secondary sealing elements
The DF type is a secondary sealing element, instead of O-ring

In both types, two identical metal seal rings are mounted on two separate housings facing each other on the wrapped seals. The metal ring is centered within the housing by an elastomeric element. Half of the mechanical face seal is fixed to the housing and the other half is rotated with the counter face.

Applications:

Mechanical seals Seals are primarily used to seal bearings in construction equipment or production facilities that operate under extreme conditions and can cause severe wear.

This includes:

Track vehicles such as excavators and bulldozers
Conveyor system
Heavy truck
Tunnel Boring Machine
Agricultural machinery
Mining machine

Mechanical seal seals have been proven for use in transmissions, mixers, agitators, wind power plants and other applications requiring similar conditions or maintenance-free life-time sealing.

Read more about Mechanical Face Seals.